Eye and Vision - Eye Dissection

Sclera

Part of the outer tunic made of dense, irregular connective tissue that forms the white of the eye

Choroid

Darkly pigmented part of the vascular middle tunic deep to the sclera

Retina

Inner tunic, deep to the choroid, held in place by the vitreous humor; functions to receive light/transmit signal along optic nerve

Optic Nerve

Bundle of ganglionic axons projecting form each eye and carrying visual information from the retina to the brain

Vitreous Humor

Transparent, gelatinous fluid in the posterior cavity that supports the retina and transmits light

Cornea

A convex transparent structure of the sclera located at the anterior of the eye; functions to admit light into the eye

Iris

Located anteriorly, it is the color portion of the eye; functions to control the size of the pupil and separates the anterior chamber from the posterior chamber in the anterior cavity of the eye

Pupil

Opening in the center of the iris that appears black

Lens

Layers of transparent cells that focus incoming light on the retina; held in place by the ciliary body and separates the anterior and posterior cavities

Ciliary Body

Forms muscular ring around the lens and secretes aqueous humor

Suspensory Ligaments

Elastic fibers that connect the lens to the muscles in the ciliary body

Orbital Fat

Supports and cushions the eye

Eye Muscles

Six extrinsic muscles that move the eye